63371994 has 80 divisors (see below), whose sum is σ = 152464032. Its totient is φ = 17550624.

The previous prime is 63371993. The next prime is 63371999. The reversal of 63371994 is 49917336.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (63371993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 763477 + ... + 763559.

Almost surely, 2^63371994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63371994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76232016).

63371994 is an abundant number, since it is smaller than the sum of its proper divisors (89092038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63371994 is an equidigital number, since it uses as much as digits as its factorization.

63371994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 148 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 63371994 is about 7960.6528626740. The cubic root of 63371994 is about 398.6873512619.

It can be divided in two parts, 633 and 71994, that added together give a palindrome (72627).

The spelling of 63371994 in words is "sixty-three million, three hundred seventy-one thousand, nine hundred ninety-four".